OBJECTIVE
To evaluate the efficiency of lymph node dissection along the recurrent laryngeal nerves for esophageal squamous cell carcinoma.
MATERIAL AND METHODS
In 2014 to 2020, the Department of Thoracoabdominal Surgery, P.A. Herzen Moscow Oncology Research Institute, made 35 surgical interventions for middle thoracic esophageal cancer with extended lymphadenectomy along the recurrent laryngeal nerves: 16 patients were included in the group after neoadjuvant chemoradiation therapy and 19 cases of self-surgical treatment made up another group. The mean age of all the patients was 58 years. Squamous cell carcinoma and adenogenic cancer of the esophagus were diagnosed in 30 (85%) and 5 (15%) cases, respectively. Five (14%) cases were diagnosed with injury to the lymph nodes in the projection of the recurrent laryngeal nerve.
RESULTS
Ten (28%) patients were observed to have a complicated postoperative period. The postoperative period was complicated by pneumonia in 8 (23%) cases; in 3 (8%) cases of them, it was associated with vocal cord paresis. Injury to the recurrent laryngeal nerve was noted in a total of 6 (17%) cases in the study. The death rate in the group was 5%. At the moment, two of 5 patients, in whom a planned histological examination has revealed injury to the lymph nodes in the projection of the recurrent laryngeal nerve, remain to be followed up; the follow-up period is from 2 to 6 months. In the group of the patients operated on at the Institute, without using lymph node dissection along the recurrent laryngeal nerve, the overall 5-year survival rate was 38%.
CONCLUSION
The fundamental performance of lymphadenectomy along the recurrent laryngeal nerve, which is actively promoted by Asian surgeons, is currently one of the most urgent areas in the surgery of esophageal squamous cell carcinoma. The globally accumulated experience with operations and the standardization of the technique have made it possible to considerably increase the safety of this stage of surgical intervention. Nevertheless, now there is no unambiguous answer to the question of whether lymph node dissection improves the long-term results of surgical and combined treatments in the European population, which necessitates recruitment and an analysis of one’s own material during clinical trials.